NVIDIA Mellanox ConnectX-3 Pro EN MCX342A-XCPN OCP2.0

The MCX342A-XCPN OCP2.0 is the dual-port variant, offering two 10GbE SFP28 ports for port redundancy or bandwidth scaling, while the MCX341A-XCPN OCP2.0 provides only a single port. Both share the same controller, PCIe 3.0 x8 interface, and OCP 2.0 form factor.

Yes. Each port operates independently and can connect to a different switch to build redundant paths or distribute traffic load, or both ports can connect to the same switch to increase available bandwidth. The actual deployment depends on the OS network configuration and bonding/teaming settings.

Both are dual-port 10GbE SFP28 OCP 2.0 adapters. The key difference is out-of-band management: the MCX342A-XCQN OCP2.0 includes NC-SI and IPMI interfaces for remote hardware monitoring and management, suited to servers requiring OOB management, while the MCX342A-XCPN OCP2.0 omits this feature and suits general deployments that don't need it.

Yes. Both ports share a single PCIe 3.0 x8 host interface with roughly 64Gb/s of theoretical total bandwidth. Under full dual-port 10GbE load (20Gb/s combined), this remains well within capacity and is not a bottleneck; for demanding applications, testing under actual traffic patterns is recommended.

The adapter supports mainstream operating systems including Windows Server, Linux (major distributions such as RHEL, Ubuntu, and SUSE), and VMware ESXi, along with SR-IOV virtualization, which partitions the physical NIC into multiple independent virtual functions for direct VM access, reducing latency and improving I/O performance. Refer to NVIDIA's official driver compatibility list for exact supported versions.